I thought grenades were illegal. That should have stopped the bad guys from getting them.

They confirmed the explosives were pressure cooker bombs similar to what was used in the marathon bombing, the suspects were throwing them from the car at officers while being chased. They found an un-detonated one about 5 minutes from me and are bussing people in that neighborhood out of the area so the bomb squad can come in.

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The other is apparently still in Watertown, police and federal agents swarming like angry bees.

Oh yeah, armored vehicles, local police, state police, and FBI are all over the place.